Improvement in modes of manufacturing the pendants of watches



I T MUELLER Mode of Manufacturing the Pendants of Watches.

Patented Sept. 16,1879.

N.FEI'ERS, PNDTO-UTHOGRAPH UNITED STATES PATENT QFFICE THEODORE MUELLER,OF PHILADELPHIA, PENNSYLVANIA, AssrerNon T0 THOMAS B. HAGSTOZ ANDoHAELES N. THORPE, or SAME PLAoE.

IMPROVEMENT IN MODES OF MANUFACTURING THE PENDANTS 0F WATCHES.

Specification forming part of Letters Patent No. 219,595, datedSeptember 16, 1879 application filed November 20, 1878.

- and the letters of reference marked thereon,

which form a component part of this specification.

The object of this invention is to produce from ductile metal,especially plated metal,

without abrading or destroying or removing the precious metal coveringand exposing the baser metal, a pendant'of great strength and durabilityat a very low cost for workmanship, without any undue waste of metal.

The nature of my invention may be con cisely stated to consist informing a thimbleshaped cup from a flat disk of metal, especiallyplatedmetal, with the plated side outward, by means of a punch anddrawing-die, subsequently deepening and contracting such thimble indiameter by a further drawing operation, and afterward, by a swagingprocess between reciprocating dies, contracting the neck of the pendantand producing. the shoulders and collars thereon.

Figure 1 shows an end view of a flat blank; Fig. 2, the same blank inplan Fig. 3, the thimble as formed at the first drawing operation, insection Fig. 4, a section of the thimble after the second drawingoperation Fig.

5, a vertical section of the first pair of closing die by means of apunch of corresponding form.

The cup or thimble A is, by the action of the punch and die, of properform, forced or drawn into the shape marked A in Fig. 4.. The open mouthof the thimble A is contracted to the form shown in Fig. 5 by the (lies0 and D, after which a rod or wire, B, bent, split, or flattened uponthe end, is i11- scrted in the cup A as Shown in Fig. 6, and the cup,held upon the wire B, is placed between the reciprocating dies E and F,and rotated by means of the wire B, so that the cup shown in Fig. 5(marked A assumes the form metal of the pendant is so compacted upon itthat it becomes after this process firmly attached thereto.

After the pendant is fully formed its roughened inner edge is turned upsmooth, and the rod is cut off, leaving only enough to pass into a holedrilled in the watch center to steady it and hold it more firmly whilethe pendant is being soldered thereto.

The form of the swaging-cavities of the dies E and F is not circular insection, but is widened out or relieved toward the edges marked G inFig. 8, so that the surface of the metal is not abraded or removed bycorners G of the swages or dies E and F, but is compressed and compactedcentrally together, the non-abrasion of the surface when plated metal isused being absolutely essential to prevent the exposure of the basermetal, and the pendant shown at A in Fig. 7 is the resulting product.

I am aware that watch-pendants have been heretofore formed of sheetmetal, stamped and swaged into the required shape; and I am also awarethat mandrels have been inserted in them temporarily for the purpose ofturning them under the swaging-dies during a portion of the shapingprocess.

Having described my invention, and the method of making the same, what Iclaim as my invention is-- The herein described process of forming tothe watch-center and steady it and hold it watch-pendants from sheetmetal by cutting more firmly while being soldered thereto, subthe blankor plavnohet, cupping it toward its stantially as described. base,contracting the open mouth, and finally swaging it under reciprocatingsWaging-(lies MUELLER upon a metallic rod inserted in the open end,Witnesses: said rod becoming thereby firmly fixed to the HENRY PLEASANT,J r.,

.pendant, and serving to attach the pendent B. H. LOWRY.

